Ice-cream freezer.



Patented Mar. 16, 1909.

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WTNESSES AT T0 RNEY J. C. MILLER.

ICE CREAM FREEZER.

APPLICATION FILED SEPT.12, 190a.

Patented Mar. 16, 1909.

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INVE NTOB ATTORNE'F no cylinder or vessel as an entirety,

35 sists of an inner cylinder 1 escaping or JOHN C. MILL-ER, OF GANTO'N,

OHIO, ASSIGNOR TO THE MILLER PASTEURIZI'NQ COMPANY, OF CANTON, UHID, A CORPORATICFN OF NEW JERSEY.

ICE-CREAM FREEZER.

Specification Letters Patent.

Patented March 16, 1908.

Application flled September 12, 1908. Serial No. 173,008.

To all whom "it may concern:

Be it known that I, JOHN C. MILLER, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Im rovements in Ice-Cream Freezers, of which the following is a specification, reference being had-therein to the accompanying drawing. r

This invention relates to improved mechamism for making ice cream or for similar urposes. It has for its'object to use a iquid cooling medium, such as brine, and to provide a circulation for the said cooling medium about the li :uid to be frozen which will cause rapid ant even freezing of the some.

Figure 1 is a E erspective view partly in section of a rose anism embodying iny invention. Fi%. 2 is a perspective view of the to or cover or the freezing cylinder or ves- Fig. 3 is a side elevation partly in section of the ireezing cylinder or vessel detached. Fi 4 is a section on the line e 4 of Fig. 3. s. 5 and (5 show details. Fig.

7 is .a parti front elevation of a freezer showing the power transmitting devices out of operative position.

In the drawings, A represents the freezing B the framework supporting the said vessel and the power transmitting devices, and C the power transmittin devices.

The freezing cy inder A lpreferably conaving the bottom wall 2.

3 is a helically grooved or corrugated cylinder snugly incasing the inner cylinder 1. The moves in the cylinder 3 ferns with '40 the outer walls of the cylinder 1 a spiral or tortuous assage-way 4 for cling medium w ich extends from the t the bottom of the freezer. The groovedthe cylinder 8 are referably relatively w as, indicated, so t at n-actically the entireexternal surface of t e inner c linder 1 is ex- I Qpossd to the cooling action 0 the brine.

5 is an-inlet duct leading to the upper end of the brine coil, and 6 is an outlet duct at the bottom of the same. The passage of the brine through this coil may be controlled by the valves 7 and 8 in the said d'ucts, res-pectivel? I incase the cooling coil or cylinder iga outer casing or jacket 9. This outer jacket serves to brace the brine so as to move in proximity to the c linder or coil, and it is secured in place by t e rings or annular plates 10-41 arranged at-the top and bottom of the cylinder, 'i'espeotively.

12 indicates the cover for the c linden? A. It is provided with handles 1' and the flange or ring-shaped projection 18. latter may be beveled, as shown at 13, to

provide ,a-bearing surface for one of the power transmitting gears.

agitatin device eompriflfifl The sti rrin or a vertical strait 1 4 st pe in a healing 15$! the bottom wall 2 bi the cylinder 1.

shaft preferably carries I 14' arranged alternately on the sides thereof.

16 is a stirring/and scraping device having its blades or scrapers arranged in outside of the blades 14 on the shaft '14 and ads ted to rotate independently of the said she t. This frame 16 has the longitudhml bars 16 and 16", the former being arranged inner of the'cylinder 1 and to direct the ui-d inwardly. The bar 16" is arranged c oser to the axis of rotationjoi the frame than the bar 16* and carries l= 9 1-6 at either endgto which the scraping lade 17 is pivoted. Said blade 17 is preferably made of wood and is adapted to scrape the inner wall of the cylinder 1 and to preazent the coking or freer,- i115 of a layer of the li aid to be frozen on the e walls thereof. hese longitudinal bars 16 and 16 are connected at their lower ends by thetransverse bar 18 loosely mounted on the shaft 14. At their 11 per ends the said bars are connected by tiie tmnsversc bar 18 which carries the tubular ro'ectien 19 having the lugs or jaws 19 w form one element of the clutch by means of which power is transmitted to rotate the stirrer o! scraper. The shaft 14, as shown, extends through this'pmjection l9 and has a squared andtaerd'end 14.

The ramemhrk B comprises the large era-p porting sur'face 20 havin the lugs 2 upon which the freezing cylin er A costs 21 38 a standard secured to the said base. A band or ring 22 encircles the ireeaing cylinder A near its to and is adapted to be clamped thereto am to hold the cylinder in piece on the frame by means of a bolt and not adopted to bind'thc eyes 22' at the ends of said band to the up or end of the stand-wrd fli. The frame B, urthermore, has the bi'lurca-ted. supports 23 upon which are the stirring blades the standards 24-24 of the framefor suporting the power transmitting devices. 25 1s a late secured to the said standards. 22" are races rigidly secured to said plate and to the band or ring 22.

26 is a shaft transversely mounted in bear ings 27 rigidly secured to the plate 25. At one end this shaft carries fast and loose pulleys 28-28, respectively, to the former of w iich power can be applied to rotate the shaft.

29 is a bevel gear rigidl shaft and adapted to mes with the bevel gear 30 on the shaft 31, the axis of rotation of which is arrm ed at ri ht an Ice to the axis of rotationeo the sha t 26. his shaft 31 is mounted in bearings 32 carried by the su plemental frame 33. This frame preferab y has the bifurcated arms 34 pivotally mounted on the shaft 26 and the upwardly and forwardly extendin arm 35 carryin the bearing 35 arrangedinalinement wit the bearing 36 at the front end of the frame 33 but above it.

37' is a. bevel gear secured to the opposite end of the shaft 31 from the bevel gear 302 The supplemental frame 33 has an opening 38 throu h which the said gear 37 pro'ects.

39 an 40 are oppkositely arranged evel gears adapted to mes with the bevel gear 37 and to be driven thereby, one in one direction and the other in the other. The gear 39 is rigidly secured to a vertical shaft 41 mounted at its upper end in the bearin 35 on the pivoted supplemental frame 33: he lower end of the said shaft 41 has the socket 42 with the walls of which the tapered end 14' of the shaft 14 is adapted to en a e. The gear 40 is rigidly secured to a tu u ar shaft 43 surrouncing the said shaft 41, and is itself mounted in the bearing 36 on the supplemental frame 33. This gear carries on its under face the jaws 40 which are adapted to engage with the jaws 19 carried by the stirrin or scraping frame 16.

44 is a hen e arranged at the front end of the supplemental frame and adapted for swinging it into and out of working position. The 0 cration of the mechanism is as follows: he liquid to be frozen is placed in the inner cyl nder .1, The agitating and scraping devices are inserted into the cylinder the cover is 'placed in position thereon, and the supplemental frame with the power transmitting devices is then swung-down into working1 position. Power is next applied throug the fast pulley and the agitatmg andscraping devices are set in motion.

The brine is then allowed to flow through the cooling coil 3, and the o erationtof t e machine continued until the iquid is frozen.

45 1s a peep hole arran ed in the cover 13, an ,1 a glass dis inserted therein. This-enables the operator to readily see the condition of the. contents of the inner vessel.

secured to the freezin of the liquid in the freezing amass 46 is a port or outlet duct extending from the inner cylinder through the outer one and adapted to serve in the cleaning or washing out of the inner cylinder. It is normally closed b a plug 46.

It wi be understood that I do not limit myself to the s ecific construction of apparatus herein escribed, but that various modifications of this device may be devised without departing from the spirit of my invention.

I believe myself to be the first to have provided a freezer for li uids in which the cooling medium is applie in a continuous stream to the surfaces which are adjacent to the li uid to be frozen.

ith an ap aratus embodying my invention it is possi le to control t e ow of brine about the freezing cylinder so as to regulate or vary the time required to accomplish the cylinder. Rapid reezi can be accomplish byallowing a relative large amount of the brine to flow around t e freezin cylinder. If ,it is desired to obtain a bar frozen cream, the flow of brine may be partially cut off and the time of freezing or agitating prolonged.

Where the brine is usedas a coolin agent" and the brine solution is itself coo ed by ammonia, the cost of freezing a given quantity of liquid is much less than in the old freezers in which salt and ice are used as the freezin agent, and the even application of the coo ing medium to the walls of the freezing cylinder insures that the liquid therein wil be evenly frozen. By using brine, furthermore, it is possible to cause the freezing by the use of a lower temperatured freezing agent than when salt and ice are used.

What I claim is:

1. In combination for an ice cream freezer, an inner cylinder having a head at one end thereof, a helically grooved 'cylinder surrounding said inner cylinder and arranged to form with the outer wall of said inner cylinder a tortuous passageway for the cooling medium an outer cylinder fitted around the said helicall grooved cylinder, 1 ring closing the annu or space between the cylinders at their opposite ends from said head" and a c linder' cad carried by said ring and remove le at will therefrom.

' 2. In combination for an ice cream freezer, an inner cylinder havi a head at one end. thereof, an outer cylin er surrounding the said'inner cylinder, means forming a tortuous passageway between the cylinders, one wall of said passageway being constituted by the outer wall of said inner cylinder, a

ring closingthe annular space between the cylinders at their opposite ends from sa d head, and a cylinder head carried by said ring and removable therefrom at will.

3. In. an ice cream freezer, the combination of'an inner cylinder having ahead at .unc end thereof, an outer uyiindu' surruundmg the said lllIiL! cylinder, mums forming a helical passageway bot-ween the c-yhndmzs, i

one wall of said pitssagflwa in-ing constituted by the outer wall ofsmd lllilfl' \']ll1(ilil 3L ring (losing the annular spacv lmtwovn the ()Tillldfls at their uppnqittunris from said head, a (ayiiz'ultar haw Lfll'l'imi by said ring and removable thefull'UH] at will, and an agitating mechanism arranged inside of said if) inner cylinder and rotatably mounted in said cylinder heads.

1 In testimony whereof I affix my signature in prespnce uf two witnesses.

\ JOHN C MILLER,

g Witnesses:

i l-IOMER UIEbSEN,

, (2. GELDLINGER. 

